Glass-molding plunger.



A. BRANCART. GLASS MOLDING PLUNGER.

APPLICATION FILED APR. 1. m7.

IIZ'II WIIIIIIII I 7/ v S Filer/2 y Patented Aug. 6, 1918.

' rtrHoRiBRANcAR'r, or FA QUEZ-BY-VIRGINAL;iBELGIUM.

twee- To all blroi'nt mag/concern." I, v y Beit known ,that l, ARTHURBBANGART, director of the company V;erreries, de liauquez, residing at Fauquez-by-Virginal, Belgium, a nda citizen of the Kingdom of Belgium, have invented certain new and useful Improvements; in Glass Molding Plungers; and I do herehydeclare thefol- 1. lowing to be a full, clear, and :eXact description, of the inventioin such as will enable others skilled ingthelart to: which it appertains to ma aana ruse-the same, reference being had to .thesac'companying' drawings,

- and to letters orfiguresof reference marked therein, which form a' part, ofthisspecifica il -i s 5; 1

i I .J lle-Present inv' on relates tofa device for molding hollow Twares in glass or any other plastic material, provided with prominences orprojecting parts on' the inner face of their sidewall; I Q H -,Gla ss hollow wares. areiusually' molded by means of a punch having a shape corner spondingto the shapeuto begivento the jecting parts perfectly molded and to take away the punch after molding.

The main feature of this device consists in a punch comprising free portions which are capable of moving from the interior toward the exterior and vice-versa and which are provided with hollow impressions corresponding to the projecting parts to be created on the wall. The punch is brought down into'the molds with its movable portions slightly drawn inside, these movable portions are then forced outward soas to mold the prominence on the inside of the wall, they are afterward removed inside again So as to clear the projecting parts P Specification of Letters Patent.

. the inner ntion A its a device rendering it possible to create pro v etass vrotnme PLUNGER.

Patented. Ange o, 1918.

Application ared April-7, 1917 serial No. 160,560. I

created on the wall, after which the punch can'be taken away from the mold.

The following specification describes by way, of example a device allowing to" perform mechanically these operations by means of a rod supporting thepunch and adapted. tomovewith respect to the punch after the latter has completely entered the mold: During said movement the rodjacts, by; 'means of surfaces profiled in the shape of. c'amsfupo i v swinging arms connected to themovable'portions, so as to, cause said movable portions to move outward whenthe rod is pushed "downward and to move inward when the rod is drawnupwa'rd- After the movable portions of the punch have been brought inside, the rod continues its upward motion andcarries away the punch out of the mold. H ,In the accompanying 'drawingsthe invention is shown in itsapplication to the fabrication ofa glass lid forpreserve'or jellypot, showing on the inner face of the side wal ltwo buttons used for fixing the cover tothe neck. j p r Figure 1 isalongitudinal section showing ,the apparatusat the moment the punch has been brought. down in the mold and the promii ences' in the" wall are not yet molded. V I: Fig. 2 is asimilansection showing the position of'tlie'jparts of theapparatus after mo n f [s i .pr m is s-i i i 3. is, a 'sjectio'n taken one. line'A B -of ,Eig 5-; v I; w Fig. shows a section. of the coverfarsa es the neck c nema;

Fig. 5 is a view oftheiiisideof the cover.

1 1 The d ic ,com i s' -a,.ri eh 1 h n shape corresponding to that of the intenor of the hollow ware. This punch is hung by means of screwssuch as 2 to a plate 3 fixed to a rod & which can be moved upward and downward by any suitable way. The punch 1 is hollow and provided at its lower end with two radial openings in which are arranged the movable portions 5 of the punch, which possess hollow impressions corresponding to the shape of the two buttons 6 to be molded on the wall. Each movable portion 5 is provided with an arm 7 of an incurved shape, which can swing on the point of contact of its convex portion against the wall of the punch, so that the movable portion 5 is then forced outward or inward. These'movements of the movable parts are obtained -niech-anieal'ly =by means of a rod 8 extending in a line with the rod 4:. This-:rod 8isprovided'w-ith'two convex surfaces 9 adapted to act on the concave faces of the arms 7 so zas toifo'rce them to swing when the rod 8 receives a dowmvard' or upwardmotion.

The device works as follows: When the punch 1 hangs to the plate"3as"shown in Fig. l, the rod 8 isin its upwardposition with res'pectto the punchand it pushes'the upperend of the twoarmsj"? soiastohold the latter in such aposi'tion" that themovable portions "5 of the punch aredrawn inside. The punch 1 is so broughtdown' inlthe usual mold 11 having a'shape 'corresponding'ito the external shape of the cover and in which the necessary quantity of glass has previously been'poured. 'The'downwar'd motion of the punch is stopped by the 'ring"l 9"ooming in contact with the edge of; themold, when the ware has obtained theggeneral shape desired, and the various parts of the device are then in the "relative 'jposition shown in Figl'l. f-The rodftcoi'itinues th'en its downward motion, which is rpossibie because the head I ofthe' screws 2'can -slide freely in'h'ol'es'12 of the'p'late S. Il heconvex surfaces 9 of the rod 8 engagewiththe concave surfaces 10 A ofthe' arms "7'f'and Cause the outer conve'Xsurfa ces of saidarmsto move or roll over the innersurfa ce oft'he punch and thereby "force outwardly the portions 5 of the punch to mold the buttons "6 in theglass as shown in Fig. 2. Thereupon the rod 8 isdrawn'upward and asit'comes again in thepo siti'on shown inFi'gfl, the movable portions?) are again drawninwar'd. At thisv'ery' moment the heads ofthescrews 2 are in contactfwiththe'conical surface at the bottom of the: holes 12; in sucha" manner that when ther'od L'continueS fitsfupwar'd motion, it takes thepun'ch'r'out' of the mold.

The position of thescrews :2 can be -"regulated by screwing them more orless in their housing in the punch 1.

As it-will.he seen in-Fig.i3,ztherod 8 is provided with flanges 13 adapted to serve as guides during thermovements-of the rod with respect to the arms 7. On the plate 3 is ar- "rangedtauprotecting cylinder 14.

The hollow ware molded in the example .hereab'ovedescribed is a pot-lid 15.;pr0vided with two buttons 6 intended to be brought 'into"contact *with the lower face of two screw-shaped ribs 16 created on the neck 17 of the vessel to be covered. Thisvesselunay be of "any material and adapted to any use (bottle, jelly-pot, preserving or sterilizing vesslytci) Such a cover is fixed'omthe necfik'by' causing the cover to turn as "if" it would I be screwed *on""the-*ne'ck so that the edge of the" cover is "pressed against "the in'dia rubber'" rin' "18.

"11111 a "device"for"mo'ldinghollow glass articles having inner r projections; *a--' mold, a punch, curved portions contained *in said punch and-adapted to "'roll- "over the inner surface thereof said 'cur've'd* portions b eing fm'm'ed at their lower" extremities 'with" hollow recesses corresponding in shape to" t'he projections tobe' molded, and" a-rod" cooperating withsaid? portions tocause thesame' 'to rollover the inner surface of "the-punch.

'2. In-a device formo'ldirfghollow*glass articles having inner projections a mold,-=a punch, curved portions contained in said punch *an'd' 'adaptedto roll over thei'niier surface thereof,- said" curved'f portions I being formed" at their lower extremitieswith hollow recesses corresponding in' -shape to the proj e'ctio-ns I td'be molded, -a'1'1d-.-a* rod formed with 'cam 'shap'e'd surfaces cooperatin' with said portions"to"cause the samet0 ro Lover the inner surface of' t-he'punch.

In" testimony whereof' I 'a flix my signature in presence' of two Witnesses.-

"Witnesses:

GEORGES: ZVANUERT @HARIms MEREfiIE.

Copies of this patent may be oht'ained for five cents each, by addressing the commissioner of Patents,

"-washihgtonfnsc. 

